# File lib/phusion_passenger/rack/request_handler.rb, line 67
        def process_request(env, input, output, full_http_response)
                rewindable_input = PhusionPassenger::Utils::RewindableInput.new(input)
                begin
                        env[RACK_VERSION]      = RACK_VERSION_VALUE
                        env[RACK_INPUT]        = rewindable_input
                        env[RACK_ERRORS]       = STDERR
                        env[RACK_MULTITHREAD]  = false
                        env[RACK_MULTIPROCESS] = true
                        env[RACK_RUN_ONCE]     = false
                        
                        if env[HTTP_CONTENT_LENGTH] && env[CONTENT_LENGTH]
                                env.delete(HTTP_CONTENT_LENGTH)
                        elsif env[HTTP_CONTENT_LENGTH] && !env[CONTENT_LENGTH]
                                env[CONTENT_LENGTH] = env[HTTP_CONTENT_LENGTH]
                                env.delete(HTTP_CONTENT_LENGTH)
                        end
                        if env[HTTP_CONTENT_TYPE] && env[CONTENT_TYPE]
                                env.delete(HTTP_CONTENT_TYPE)
                        elsif env[HTTP_CONTENT_TYPE] && !env[CONTENT_TYPE]
                                env[CONTENT_TYPE] = env[HTTP_CONTENT_TYPE]
                                env.delete(HTTP_CONTENT_TYPE)
                        end
                        
                        if env[HTTPS] == YES || env[HTTPS] == ON || env[HTTPS] == ONE
                                env[RACK_URL_SCHEME] = HTTPS_DOWNCASE
                        else
                                env[RACK_URL_SCHEME] = HTTP
                        end
                        
                        status, headers, body = @app.call(env)
                        begin
                                if full_http_response
                                        output.write("HTTP/1.1 #{status.to_i.to_s} Whatever#{CRLF}")
                                        output.write("Connection: close#{CRLF}")
                                end
                                headers_output = [
                                        STATUS, status.to_i.to_s, CRLF,
                                        X_POWERED_BY, @passenger_header, CRLF
                                ]
                                headers.each do |key, values|
                                        if values.is_a?(String)
                                                values = values.split(NEWLINE)
                                        end
                                        values.each do |value|
                                                headers_output << key
                                                headers_output << NAME_VALUE_SEPARATOR
                                                headers_output << value
                                                headers_output << CRLF
                                        end
                                end
                                headers_output << CRLF
                                
                                if body.is_a?(Array)
                                        # The body may be an ActionController::StringCoercion::UglyBody
                                        # object instead of a real Array, even when #is_a? claims so.
                                        # Call #to_a just to be sure.
                                        output.writev2(headers_output, body.to_a)
                                elsif body.is_a?(String)
                                        headers_output << body
                                        output.writev(headers_output)
                                else
                                        output.writev(headers_output)
                                        if body
                                                body.each do |s|
                                                        output.write(s)
                                                end
                                        end
                                end
                        ensure
                                body.close if body.respond_to?(:close)
                        end
                ensure
                        rewindable_input.close
                end
        end